KR20200074487A - Vehicle and control method of the vehicle - Google Patents

Abstract

Provided are a vehicle, a vehicle control method, and an electronic module, wherein the vehicle can secure the images around the vehicle before and after an accident in a stable manner even in a situation in which an accident has occurred to damage the power supply provided in the vehicle. According to one embodiment of the present invention, the vehicle comprises: a camera which acquires an image of the surrounding of the vehicle; a first power supply unit; a second power supply unit; a sensor unit which acquires impact information of the vehicle; a storage unit which includes a buffer and a non-volatile memory; and a control unit which receives power from the first power supply unit, stores the images of the surrounding of the vehicle in the buffer for a predetermined period of time, and when it is determined that an accident has occurred on the vehicle based on the impact information, controls to receive the power from at least one of the first power supply unit and the second power supply unit, to transmit the data stored in the buffer from a predetermined point of time before the accident until a predetermined point of time after the accident to the non-volatile memory, and to store the data in the non-volatile memory.

Description

Vehicle and vehicle control method {VEHICLE AND CONTROL METHOD OF THE VEHICLE}

The present invention is a technology related to a vehicle and a vehicle control method including a black box capable of securing an image even in an accident situation.

In recent years, more and more vehicles are equipped with a blind spot identification device on the front and rear of the vehicle so that the driver can conveniently check the blind spot when driving. After that, the A/V system in the vehicle interior allows the driver to view the image captured through the monitor.

For example, in recent years, a video recorder (DVR) for a vehicle that is installed in a vehicle to record an external image of a vehicle has been developed and commercialized to identify the cause of a traffic accident, and has been developed to provide an economical, practical, and technical alternative. Black box is used.

It is common for the black box of a vehicle to be supplied with power through the power provided in the vehicle to acquire an image around the vehicle. However, a situation in which a vehicle's black box image is required is a vehicle accident situation, and even in a vehicle accident situation, a situation in which the black box must store images independently of power supply may occur, and research related to this is underway.

The present invention provides a vehicle, a vehicle control method and an electronic module capable of stably securing an image around a vehicle before and after an accident even in a situation where an accident in which the power provided to the vehicle is damaged.

A vehicle according to an embodiment includes a camera that acquires an image around the vehicle; A first power supply unit;

A second power supply unit; A sensor unit for acquiring vehicle impact information; A storage unit including a buffer and a non-volatile memory; And receiving power from the first power supply unit, storing an image around the vehicle in the buffer for a predetermined time, and determining that the vehicle has an accident based on the shock information, the first power supply unit and the second power supply unit. It includes a control unit for receiving power from at least one of the power supply unit and controlling to transfer and store the data stored in the buffer to the inactive memory from a point before a predetermined accident occurs to a point after a predetermined accident occurs.

When the amount of impact included in the impact information exceeds a predetermined value, the control unit receives power from the second power supply unit.

The data stored in the buffer can be controlled to be transferred to and stored in the inactive memory.

The control unit may control to transfer and store data stored in the buffer to the inactive memory from a time before a predetermined accident occurs.

When the amount of impact included in the impact information is less than a predetermined value, the controller may control to receive power from the first power supply unit and transfer the data stored in the buffer to the inactive memory for storage.

Further comprising a communication unit for receiving a satellite signal, the sensor unit acquires the driving information of the vehicle,

The control unit determines the first coordinate information of the vehicle based on the driving information obtained by the sensor unit, determines the second coordinate information of the vehicle based on the satellite signal obtained by the communication unit, and Controlled to transfer and store data stored in the buffer to the inactive memory from a predetermined previous time point to a predetermined time point after the difference between the first coordinate information and the second coordinate information exceeds a predetermined reference difference. Can.

The controller may determine whether an accident has occurred in the vehicle based on the satellite signal received from the communication unit and the impact information.

The controller may control the data to be encrypted and stored in the inactive memory.

Another embodiment, another vehicle control method, obtains an image around the vehicle, obtains the shock information of the vehicle, receives power from the first power source,

The image around the vehicle is stored in a buffer for a predetermined period of time, and if it is determined that the vehicle has an accident based on the shock information, power is supplied from at least one of the first and second power units to generate a predetermined accident. And controlling to transfer and store data stored in the buffer to an inactive memory from a previous time to a time after a predetermined accident.

Controlling the data stored in the buffer to be transferred to and stored in the inactive memory means that when the amount of impact included in the impact information exceeds a predetermined value, power is supplied from the second power supply unit to receive the data stored in the buffer in the inactive memory. It may include controlling to be delivered to the storage.

Controlling the data stored in the buffer to be transferred to and stored in the inactive memory may include controlling to transfer and store data stored in the buffer to the inactive memory from a point in time before a predetermined accident occurs.

Controlling the data stored in the buffer to be transferred to and stored in the inactive memory means that if the amount of impact included in the impact information is less than a predetermined value, power is supplied from the first power supply unit and the data stored in the buffer is stored in the inactive memory. And controlling to deliver and store.

A vehicle control method according to an embodiment receives a satellite signal, obtains driving information of a vehicle, determines first coordinate information of the vehicle based on the driving information, and removes the vehicle based on the satellite signal. 2 coordinate information is determined, and the data stored in the buffer is deactivated from a previously determined time point to a predetermined time point after the difference between the first coordinate information and the second coordinate information exceeds a predetermined reference difference. It may further include controlling to transfer to memory and store it.

The vehicle, the vehicle control method, and the electronic module according to an embodiment can stably secure images around the vehicle before and after the accident even in a situation in which an accident in which the power provided to the vehicle is damaged.

1 is a control block diagram according to an embodiment.
2 is a flowchart according to an embodiment.
3 is a table showing an accident occurrence type of a vehicle according to an embodiment.
4 and 5 are views for explaining an operation for determining an accident occurrence according to an embodiment.

Throughout the specification, the same reference numerals refer to the same components. This specification does not describe all elements of the embodiments, and overlapping contents between the general contents or embodiments in the art to which the present invention pertains are omitted. The term'unit, module, member, block' used in the specification may be implemented by software or hardware, and according to embodiments, a plurality of'unit, module, member, block' may be implemented as one component, It is also possible that one'part, module, member, block' includes a plurality of components.

Throughout the specification, when a part is "connected" to another part, this includes not only the case of being directly connected but also being connected indirectly, and the indirect connection includes being connected through a wireless communication network. do.

Also, when a part “includes” a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise specified.

Throughout the specification, when one member is positioned “on” another member, this includes not only the case where one member abuts another member, but also the case where another member exists between the two members.

Terms such as first and second are used to distinguish one component from other components, and the component is not limited by the above-mentioned terms.

Singular expressions include plural expressions, unless the context clearly has an exception.

In each step, the identification code is used for convenience of explanation. The identification code does not describe the order of each step, and each step can be executed differently from the specified order unless a specific order is clearly stated in the context. have.

Hereinafter, working principles and embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a control block diagram according to an embodiment.

Referring to FIG. 1, the vehicle 1 according to an embodiment may include a communication unit 101, a sensor unit 102, a first power supply unit 103, a camera 104, and an electronic module 110.

Also, the electronic module according to an embodiment may include a control unit 111, a second power supply unit 112, and a storage unit 113.

The sensor unit 102 may acquire shock information received by the vehicle.

According to one embodiment, the sensor unit 102 may be implemented as an acceleration sensor and a 3-axis sensor. The acceleration sensor may be implemented to obtain information on acceleration in the x-axis, y-axis, and z-axis directions when the vehicle moves in 3D. The acceleration sensor may be implemented as a gyro sensor. The sensor unit 102 is not limited as long as it is configured to calculate vehicle impact information.

The communication unit 101 may be provided to receive a satellite signal. The satellite signal may include a Global Positioning System (GPS) signal. The vehicle can receive the signal from the satellite and calculate the current location of the vehicle.

The first power supply unit 103 and the second power supply unit 112 may transmit power to components of the vehicle and components of the electronic module, respectively.

Each of the first power supply unit 103 and the second power supply unit 112 may be provided with a battery.

A battery is provided in a typical vehicle. However, in the case of the vehicle 100, a large-capacity high-voltage battery is required. Electric power stored in each power supply unit may be used to generate power by driving a configuration provided in a vehicle. The battery according to an embodiment of the present invention may be a lithium battery.

In particular, the second power supply unit 112 may be provided to have a capacity capable of operating while storing vehicle information to the storage unit 113 even if the first power supply unit 103, which is the main power supply of the vehicle, is damaged.

The camera 104 may acquire an image around the vehicle.

According to an embodiment, the camera 104 may be provided in the side mirrors 14R and 14L provided in the vehicle to acquire an image around the vehicle.

The camera 104 installed in the vehicle may include a charge-coupled device (CCD) camera 104 or 110 or a CMOS color image sensor. Here, both the CCD and the CMOS refer to a sensor that converts and stores the light coming through the lens of the cameras 104 and 101 into electrical signals. Specifically, the CCD (Charge-Coupled Device) camera 104 is a device that converts an image into an electrical signal using a charge-coupled device. In addition, a CMOS image sensor (CIS) means a low-consumption, low-power imaging device having a CMOS structure, and serves as an electronic film for digital devices. In general, the CCD has a better sensitivity than the CIS, and is often used in the vehicle 1, but is not necessarily limited thereto.

The storage unit 113 may include a buffer 113-1 and an inactive memory 113-2.

The buffer 113-1 may refer to a storage area used for the purpose of satisfactorily combining by compensating for a difference in data transmission speed or processing speed when data is transmitted from one device to another.

The storage unit 113 is a non-volatile memory device or RAM, such as a cache, read only memory (ROM), programmable ROM (PROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), and flash memory A volatile memory device such as (Random Access Memory) or a storage medium such as a hard disk drive (HDD) or CD-ROM may be implemented, but is not limited thereto. The storage unit 113 may be a memory implemented in a separate chip from the above-described processor in relation to the controller 111, or may be implemented in a single chip with the processor.

The control unit 111 may receive power from the first power supply unit 103 and store an image around the vehicle in the buffer 113-1 for a predetermined time.

That is, the control unit 111 may receive power from the first power supply unit 103 provided in the electronic module and provided in addition to the electronic module to continuously store the images around the vehicle obtained from the camera 104 in the buffer 113-1. .

The controller 111 may determine whether the vehicle has an accident based on the impact information. The detailed operation of the controller 111 to determine whether an accident has occurred in the vehicle will be described later.

The control unit 111 receives power from at least one of the first power supply unit 103 and the second power supply unit 112 and is stored in the buffer 113-1 from a time before a predetermined accident occurs to a time after a predetermined accident occurs. Data can be controlled to be transferred to and stored in the inactive memory 113-2.

That is, the control unit 111 stores the image from the time before and after the predetermined time based on the time at which the accident occurred, from the time before and after the predetermined time based on the time at which the accident occurred, in the inactive memory 113- 2) can be transferred and stored.

The controller 111 may determine whether the amount of impact included in the impact information exceeds a predetermined value. Since the amount of impact exceeding a predetermined value may mean that an accident occurred in the vehicle, the control unit 111 included in the electronic module is in a state of not receiving a smooth power supply from the first power supply unit 103 provided in the vehicle. Can mean

In this case, the control unit 111 receives power from the second power supply unit 112 provided inside the electronic module.

The data stored in the buffer 113-1 may be controlled to be transferred to and stored in the inactive memory 113-2.

In addition, the control unit 111 may control to transfer and store data stored in the buffer 113-1 to the inactive memory 113-2 from a time before a predetermined accident occurs. That is, in the case of a serious accident, data including images around the vehicle may be stored from the time of the accident until the capacity of the inactive memory provided in the electronic module is full. In this case, the control unit 111 may store all data in an inactive memory regardless of form.

If the amount of impact included in the impact information is less than a predetermined value, the controller 111 may determine that the accident in the vehicle is relatively minor.

In this case, since power can be supplied from the first power supply unit 103 which is a central power supply device provided in the vehicle, the control unit 111 receives power from the first power supply unit 103 and receives data stored in the buffer 113-1. It can be controlled to transfer to the inactive memory (113-2) to store.

Also, in this case, the controller 111 may control the data stored in the buffer 113-1 to be transferred to the inactive memory 113-2 and stored in a predetermined form. The form that the controller 111 transmits and stores to the inactive memory 113-2 may include steering torque, brake pedal information, vehicle speed, track information, and acceleration sensor values.

The control unit 111 may determine a predetermined time when the amount of impact included in the impact information is less than a predetermined value. A detailed description related to this will be described later.

The controller 111 may determine whether an accident has occurred in the vehicle based on the satellite signal (GPS, Global Positioning System) received from the communication unit 101 and the impact information.

Specifically, the controller 111 may determine the coordinate information of the vehicle based on the satellite signal received by the communication unit 101, and may estimate the vehicle coordinate information based on the information obtained from the sensor unit as described later. , If the difference value between the two coordinate information exceeds a predetermined value, it may be determined that an accident or a high probability of an accident occurs.

The signal of the communication unit 101 used by the control unit 111 is not limited as long as the signal of the vehicle is a signal capable of determining whether a vehicle accident has occurred.

The controller 111 may control data to be encrypted and stored in the inactive memory 113-2. That is, the control unit 111 may encrypt data existing in the buffer 113-1. The operation of encrypting the control unit 111 may include symmetric key encryption through random key generation and asymmetric encryption of the generated random key with the OEM's public key.

In addition, the control unit 111 performs a battery management function storage processing function, data extraction function, and accident situation determination function.

The data storage processing function may refer to a function of storing vehicle information in a buffer 113-1, detecting shock and determining whether the vehicle has an accident, and encrypting and recording data in a nonvolatile memory when a storage condition occurs. .

The battery management function may mean a function for guaranteeing battery life.

The data extraction function may refer to a data extraction interface function.

The accident situation judgment function may refer to a judgment function that synthesizes and judges an accident signal of an indirect accident analysis device and an autonomous driving controller.

The indirect accident analysis device may refer to a function of checking whether the detected movement of the vehicle using an acceleration sensor or the like is outside the expected normal behavior range based on the vehicle model. A detailed description related to this will be described later.

At least one component may be added or deleted in response to the performance of the components of the vehicle shown in FIG. 1. In addition, it will be readily understood by those skilled in the art that the mutual location of components may be changed in correspondence with the performance or structure of the system.

Meanwhile, each component illustrated in FIG. 1 refers to software and/or hardware components such as a field programmable gate array (FPGA) and an application specific integrated circuit (ASIC).

2 is a flowchart according to an embodiment.

Referring to FIG. 2, the vehicle may store the surrounding image of the vehicle in a buffer regardless of an accident (1001). In addition, the control unit provided in the vehicle may determine whether an accident has occurred based on various information (1002).

The control unit may determine whether an accident has occurred and the amount of impact received by the vehicle has exceeded a predetermined amount of impact (1003). The control unit may determine that a serious accident has occurred if the impact amount exceeds a predetermined impact amount.

If the impact amount does not exceed the predetermined impact amount, it may be determined that a minor accident has occurred.

If the predetermined amount of impact is not exceeded, the control unit may receive power from the first power supply unit provided in the vehicle, not the electronic module itself (1004), and store data in a buffer in an inactive memory in a predetermined form for a predetermined time ( 1005).

When the predetermined amount of impact is exceeded, the controller may determine that it is difficult to receive power from the first power supply unit provided in the vehicle and receive power from the second power supply unit provided in the electronic module itself (1006).

On the other hand, in this case, the control unit may transmit data from the buffer to the inactive memory without limitation on the storage time or the stored data, and store the encrypted data (1007, 1008).

3 is a table showing an accident occurrence type of a vehicle according to an embodiment.

Referring to FIG. 3, the type of accident occurrence is classified, and the time for acquiring the vehicle image from the type and the type of storage and the power supplied with power are presented.

As described above, the first type may mean a case in which an accident including a case where the amount of force received by the vehicle exceeds a predetermined value is relatively minor.

The first type may include incomplete accidents, such as when autonomous driving is forcibly released or when an airbag is deployed. In this case, a vehicle surrounding image of a predetermined range of time is required based on the time of the accident, and the vehicle image may be stored in the inactive memory in a determined time range such as “15 seconds” and “30 seconds”, respectively.

In addition, in this case, the type of data stored may include limited content such as steering torque. In the case of the first type accident, the control unit may receive power from the first power supply unit, which is a central power supply unit provided in the vehicle.

On the other hand, in the case of the second type of accident, it may include a serious accident, such as the slowing of the vehicle, in which case power can be supplied from the second power supply unit provided in the electronic module itself, without limitation of time in the capacity limit of the inactive memory. All data can be stored.

Meanwhile, the type of accident described in FIG. 3 is only an embodiment of the present invention, and there is no limitation in time and content for storing an image.

4 and 5 are views for explaining an operation for determining an accident occurrence according to an embodiment.

Referring to FIG. 4A, the control unit may determine whether an accident has occurred based on vehicle information collected, including information collected from a sensor unit such as an acceleration sensor.

The controller is based on the determination of the occurrence of a direct accident through a predefined failure detection signal (CAN, Ethernet, etc.) from an electronic module external control module 105 such as an autonomous driving controller and other electronic modules including the sensor unit 102. It is possible to determine whether an accident has occurred.

The control unit 111 may derive an analytic redundancy based on the vehicle dynamics model for the sensor signals acquired by the sensor unit 102 and determine whether an accident has occurred based on an indirect accident situation diagnosis through the sensor redundancy. have.

The controller 111 may determine the difference between the calculated value and the actual measured value through the vehicle dynamics model, and determine an indirect accident when the magnitude of the difference is greater than a predetermined value.

4B is a view for explaining an operation for determining the risk.

Referring to FIG. 4B, the control unit 111 may determine the risk of an accident by analyzing vehicle driving information that operates in the current driving environment by linking the navigation map information with the communication unit 101 and the sensor unit 102. In addition, the control unit may determine a dangerous situation based on the accident risk.

The controller may determine the coordinate information of the vehicle using each of the communication unit and the sensor unit navigation map information, and may determine the risk based on the difference in coordinate information determined based on each.

Specifically, the communication unit 101 may obtain the location and heading information of the vehicle by receiving the GPS signal S4b.

In addition, the sensor unit provided in the vehicle includes a yaw rate sensor, a steering sensor, and a sensor in the wheel, and may acquire driving information of the vehicle based on the sensor.

The heading information may mean information including the directionality that the vehicle is currently driving.

The control unit may determine a difference between heading information derived using a steering sensor and heading information using a yaw rate sensor, and may determine that the risk is high when the difference exceeds a predetermined value.

The control unit may update the heading change amount and estimation of the vehicle using the information received from the sensor unit.

The vehicle may determine a change amount of the moving distance of the vehicle and the heading information of the vehicle based on the steering information and yaw rate information obtained from the sensor unit.

The control unit may calculate the moving distance of the vehicle using the wheel information of the vehicle from the sensor unit and continuously estimate the vehicle's coordinate value EP based on the heading information described above.

In addition, the control unit may determine the reception strength of the place where the vehicle travels based on the navigation information based on the communication unit, and if the GPS reception strength is less than a predetermined value, the allowable range of the residual may be broadly determined. If the risk of an accident is high, the controller can narrowly determine the range of the residuals.

The residual may mean a difference between the observed vehicle coordinate value DP and the coordinate value EP estimated by the above-described method.

On the other hand, the vehicle may determine the reference difference of the residual in the event of an accident, and if the difference between the coordinate value DP of the vehicle received through the communication unit and the coordinate value EP estimated by the above-described method exceeds the predetermined reference difference , It can be judged as a situation in which an accident may occur.

Meanwhile, the control unit may determine a reference difference based on the navigation information for the current driving section of the vehicle. If the residual value of the vehicle exceeds the reference difference, the control unit may determine that the vehicle has an accident.

The reference difference may be determined differently for each section using vehicle accident data in the corresponding section. The control unit may collect residual data in the event of an accident to update the reference difference in the corresponding section.

In this case, the control unit may control the data stored in the buffer to be transferred to and stored in the inactive memory from a predetermined previous time point to a predetermined later time point based on a time point exceeding a reference difference. It can be used to correct the accuracy of situation judgment.

On the other hand, the above is only one embodiment for determining the risk, and if the operation is to determine the probability of an accident in the vehicle, the operation is not limited.

5A and 5B, the control unit 111 may determine whether the external control module is operating normally through a code signal repeatedly coming from the external control module 105.

Meanwhile, the external control module 105 may include an autonomous driving controller 105-1 and an indirect accident analysis device 105-2.

The controller 111 may be divided into a first type in which an accident is mild and a second type in which an accident is serious.

If the HeartBeat of the autonomous driving controller is normal and the direct accident detection signal detected by the autonomous driving controller is normal, the controller 111 may determine that an accident has not occurred.

When the HeartBeat of the autonomous driving controller is normal and the direct accident detection signal of the autonomous driving controller is detected as an accident, the controller 111 is a minor accident type when the analysis result of the indirect accident analysis device is found to have not occurred. It can be judged that an accident of type 1 has occurred.

When the HeartBeat of the autonomous driving controller is normal and the direct accident detection signal of the autonomous driving controller is detected as an accident, the controller 111 is the second type of serious accident when the analysis result of the indirect accident analysis device is found to have occurred. It can be judged that a tangible accident has occurred.

If the HeartBeat of the autonomous driving controller is abnormal and the analysis result of the indirect accident analysis device is found to have not occurred an accident, the controller 111 may determine that the autonomous driving controller has failed.

When the HeartBeat of the autonomous driving controller is abnormal and the analysis result of the indirect accident analysis device is found to have occurred, the controller 111 may determine that the second type of accident has occurred.

The control unit 111 may determine that an external control module has an accident, and if the HeartBeat is abnormal, determine that a second type of accident has occurred.

If the external control module 105 determines that an accident has occurred, and the HeartBeat is normal and determines that the direct accident detection signal is an accident, the controller 111 may determine that the second type of accident occurs.

The controller 111 may determine that the external control module 105 has not occurred an accident, and if the HeartBeat is normal and the direct accident detection signal is determined to be an accident, it may be determined that the first type of accident has occurred.

On the other hand, in the case of a serious accident of the second type, the controller 111 allows information for a longest storage time to be stored according to the inactive memory.

Meanwhile, FIGS. 4 and 5 are only an embodiment for determining whether an accident has occurred according to an embodiment, and there is no limitation in an operation for determining an accident.

Meanwhile, the disclosed embodiments may be implemented in the form of a recording medium that stores instructions executable by a computer. Instructions may be stored in the form of program code, and when executed by a processor, may generate program modules to perform operations of the disclosed embodiments. The recording medium may be embodied as a computer-readable recording medium.

The computer-readable recording medium includes all types of recording media storing instructions that can be read by a computer. For example, there may be a read only memory (ROM), a random access memory (RAM), a magnetic tape, a magnetic disk, a flash memory, and an optical data storage device.

The disclosed embodiments have been described with reference to the accompanying drawings as described above. Those skilled in the art to which the present invention pertains have different forms from the disclosed embodiments without changing the technical spirit or essential features of the present invention. It will be understood that the invention can be practiced with. The disclosed embodiments are illustrative and should not be construed as limiting.

1: Vehicle
101: communication department
102: sensor unit
103: first power supply
104: camera
102: sensor unit
110: electronic module
111: control unit
112: second power supply
113: storage unit

Claims (12)

A camera that acquires an image around the vehicle;
A first power supply unit;
A second power supply unit;
A sensor unit for acquiring vehicle impact information;
A storage unit including a buffer and a non-volatile memory; And
Receiving power from the first power supply,
The image around the vehicle is stored in the buffer for a predetermined time,
If it is determined that the vehicle has an accident based on the shock information,
Receiving power from at least one of the first power supply unit and the second power supply unit
And a control unit controlling to transmit and store data stored in the buffer to the inactive memory from a time point before a predetermined accident occurrence to a time point after a predetermined accident occurrence.
According to claim 1,
The control unit,
If the impact amount included in the impact information exceeds a predetermined value,
Receiving power from the second power supply
A vehicle that controls to transfer and store data stored in the buffer to the inactive memory.
According to claim 2,
The control unit,
A vehicle that controls to transfer and store data stored in the buffer to the inactive memory from a point before a predetermined accident occurs.
According to claim 1,
The control unit,
If the impact amount included in the impact information is less than a predetermined value,
Receiving power from the first power supply
A vehicle that controls to transfer and store data stored in the buffer to the inactive memory.
According to claim 1,
Further comprising a communication unit for receiving a satellite signal,
The sensor unit acquires the driving information of the vehicle,
The control unit,
Determine the first coordinate information of the vehicle based on the driving information obtained from the sensor unit,
Determine the second coordinate information of the vehicle based on the satellite signal obtained from the communication unit,
Based on a time point when the difference between the first coordinate information and the second coordinate information exceeds a predetermined reference difference
A vehicle that controls to transfer and store data stored in the buffer to the inactive memory from a predetermined previous time point to a predetermined later time point.
The method of claim 5,
The control unit,
A vehicle that determines whether an accident occurs in the vehicle based on the satellite signal and the impact information received from the communication unit.
According to claim 1,
The control unit,
Vehicle that controls to encrypt the data to be stored in the inactive memory
Acquiring images around the vehicle,
Acquiring the impact information of the vehicle,
Receiving power from the first power supply,
The image around the vehicle is stored in a buffer for a predetermined time,
If it is determined that the vehicle has an accident based on the shock information,
Receiving power from at least one of the first power supply unit and the second power supply unit
And controlling to transfer and store data stored in the buffer to an inactive memory from a time point before a predetermined accident occurrence to a time point after a predetermined accident occurrence.
The method of claim 8,
Controlling the data stored in the buffer to be transferred to and stored in an inactive memory is performed when the impact amount included in the impact information exceeds a predetermined value.
Receiving power from the second power supply
And controlling to transfer and store data stored in the buffer to the inactive memory.
The method of claim 9,
Controlling the data stored in the buffer to be transferred to and stored in the inactive memory includes controlling the data stored in the buffer to be transferred to and stored in the inactive memory from a time before a predetermined accident occurs.
The method of claim 8,
Controlling the data stored in the buffer to be transferred to and stored in the inactive memory may include: if the impact amount included in the impact information is less than a predetermined value,
Receiving power from the first power supply
And controlling to transfer and store data stored in the buffer to the inactive memory.
The method of claim 9,
Receiving a satellite signal,
Acquire vehicle driving information,
Determine the first coordinate information of the vehicle based on the driving information,
Determine the second coordinate information of the vehicle based on the satellite signal,
Based on a time point when the difference between the first coordinate information and the second coordinate information exceeds a predetermined reference difference
And controlling to transfer and store data stored in the buffer to the inactive memory from a predetermined previous time point to a predetermined later time point.

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